CAS #:

Linear Formula:

(NH4)2S2O3

MDL Number:

MFCD00015965

EC No.:

231-982-0

ORDER

PRODUCT Product Code ORDER SAFETY DATA TECHNICAL DATA
(2N) 99% Ammonium Thiosulfate
AM-TSAT-02
Pricing > SDS > Data Sheet >
(3N) 99.9% Ammonium Thiosulfate
AM-TSAT-03
Pricing > SDS > Data Sheet >
(4N) 99.99% Ammonium Thiosulfate
AM-TSAT-04
Pricing > SDS > Data Sheet >
(5N) 99.999% Ammonium Thiosulfate
AM-TSAT-05
Pricing > SDS > Data Sheet >

Ammonium Thiosulfate Properties (Theoretical)

Compound Formula H8N2O3S2
Molecular Weight 148.21
Appearance White crystals or lumps
Melting Point 150 °C (302 °F)
Boiling Point N/A
Density 1.679 g/cm3
Solubility in H2O Highly soluble
Exact Mass N/A
Monoisotopic Mass 147.997

Ammonium Thiosulfate Health & Safety Information

Signal Word N/A
Hazard Statements N/A
Hazard Codes N/A
Risk Codes N/A
Safety Statements N/A
Transport Information NONH for all modes of transport

View and Print SDS

SAFETY DATA SHEET

Date Accessed: 06/15/2021
Date Revised: 05/15/2015

SECTION 1. IDENTIFICATION

Product Name: Ammonium Thiosulfate

Product Number: All applicable American Elements product codes, e.g. AM-TSAT-02 , AM-TSAT-03 , AM-TSAT-04 , AM-TSAT-05

CAS #: 7783-18-8

Relevant identified uses of the substance: Scientific research and development

Supplier details:
American Elements
10884 Weyburn Ave.
Los Angeles, CA 90024
Tel: +1 310-208-0551
Fax: +1 310-208-0351

Emergency telephone number:
Domestic, North America: +1 800-424-9300
International: +1 703-527-3887


SECTION 2. HAZARDS IDENTIFICATION

Classification of the substance or mixture
Not a hazardous substance or mixture.
GHS Label elements, including precautionary statements
Not a hazardous substance or mixture.
Hazards not otherwise classified (HNOC) or not covered by GHS - none


SECTION 3. COMPOSITION/INFORMATION ON INGREDIENTS

Substances
Formula : H8N2O3S2
Molecular weight : 148.21 g/mol
CAS-No. : 7783-18-8


SECTION 4. FIRST AID MEASURES

Description of first aid measures
General advice
Consult a physician. Show this safety data sheet to the doctor in attendance.
If inhaled
If breathed in, move person into fresh air. If not breathing, give artificial respiration.
Consult a physician.
In case of skin contact
Wash off with soap and plenty of water. Consult a physician.
In case of eye contact
Flush eyes with water as a precaution.
If swallowed
Never give anything by mouth to an unconscious person. Rinse mouth with water. Consult
a physician.
Most important symptoms and effects, both acute and delayed
The most important known symptoms and effects are described in the labelling (see section
2.2) and/or in section 11
Indication of any immediate medical attention and special treatment needed
No data available


SECTION 5. FIREFIGHTING MEASURES

Extinguishing media
Suitable extinguishing media
Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide.
Special hazards arising from the substance or mixture
Nitrogen oxides (NOx), Sulphur oxides
Advice for firefighters
Wear self-contained breathing apparatus for firefighting if necessary.


SECTION 6. ACCIDENTAL RELEASE MEASURES

Personal precautions, protective equipment and emergency procedures
Use personal protective equipment. Avoid dust formation. Avoid breathing vapours, mist
or gas. Avoid breathing dust.
For personal protection see section 8.
Environmental precautions
Do not let product enter drains.
Methods and materials for containment and cleaning up
Pick up and arrange disposal without creating dust. Sweep up and shovel. Keep in
suitable, closed containers for disposal.


SECTION 7. HANDLING AND STORAGE

Precautions for safe handling
Avoid formation of dust and aerosols.
Provide appropriate exhaust ventilation at places where dust is formed.
For precautions see section 2.2.
Conditions for safe storage, including any incompatibilities
Keep container tightly closed in a dry and well-ventilated place.
Storage class (TRGS 510): 13: Non Combustible Solids


SECTION 8. EXPOSURE CONTROLS/PERSONAL PROTECTION

Control parameters
Components with workplace control parameters
Contains no substances with occupational exposure limit values.
Exposure controls
Appropriate engineering controls
Handle in accordance with good industrial hygiene and safety practice. Wash hands
before breaks and at the end of workday.
Personal protective equipment
Eye/face protection
Use equipment for eye protection tested and approved under appropriate
government standards such as NIOSH (US) or EN 166(EU).
Skin protection
Handle with gloves. Gloves must be inspected prior to use. Use proper glove
removal technique (without touching glove's outer surface) to avoid skin contact
with this product. Dispose of contaminated gloves after use in accordance with
applicable laws and good laboratory practices. Wash and dry hands.
Body Protection
Choose body protection in relation to its type, to the concentration and amount of
dangerous substances, and to the specific work-place., The type of protective
equipment must be selected according to the concentration and amount of the
dangerous substance at the specific workplace.
Respiratory protection
Respiratory protection is not required. Where protection from nuisance levels of
dusts are desired, use type N95 (US) or type P1 (EN 143) dust masks. Use
respirators and components tested and approved under appropriate government
standards such as NIOSH (US) or CEN (EU).
Control of environmental exposure
Do not let product enter drains.


SECTION 9. PHYSICAL AND CHEMICAL PROPERTIES

Appearance Form: Crystals with lumps
Colour: white
Odour No data available
Odour Threshold No data available
pH No data available
Melting point/freezing point: No data available
Initial boiling point and boiling range: No data available
Flash point ()No data available
Evaporation rate No data available
Flammability (solid, gas): No data available
Upper/lower flammability or explosive limits: No data available
Vapour pressure No data available
Vapour density No data available
Relative density 1.679 g/cm3 at 25 °C (77 °F)
Water solubility 1,033 g/l at 100 °C (212 °F) - soluble
Partition coefficient: n-octanol/water: No data available
Auto-ignition temperature: No data available
Decomposition temperature: 150 °C (302 °F) -
Viscosity No data available
Explosive properties No data available
Oxidizing properties No data available


SECTION 10. STABILITY AND REACTIVITY

Reactivity
No data available
Chemical stability
Stable under recommended storage conditions.
Possibility of hazardous reactions
No data available
Conditions to avoid
No data available
Incompatible materials
Strong oxidizing agents, Strong acids, Magnesium, Aluminum
Hazardous decomposition products
Hazardous decomposition products formed under fire conditions. - Nitrogen oxides (NOx),
Sulphur oxides
Other decomposition products - No data available


SECTION 11. TOXICOLOGICAL INFORMATION

Acute toxicity
LD50 Oral - Rat - female - > 2,000 mg/kg
(OECD Test Guideline 425)
Remarks: (in analogy to similar products)
LC50 Inhalation - Rat - male and female - 4 h - > 2.6 mg/l
(OECD Test Guideline 403)
Remarks: (in analogy to similar products)
LD50 Dermal - Rabbit - male and female - > 2,000 mg/kg
(OECD Test Guideline 402)
Remarks: (in analogy to similar products)
No data available
Skin corrosion/irritation
Skin - Rabbit
Result: No skin irritation - 4 h
(OECD Test Guideline 404)
Remarks: (in analogy to similar products)
Serious eye damage/eye irritation
Eyes - Rabbit
Result: No eye irritation
(OECD Test Guideline 405)
Respiratory or skin sensitisation
Local lymph node assay (LLNA) - Mouse
Result: negative
(OECD Test Guideline 429)
Germ cell mutagenicity
Chromosome aberration test in vitro
Chinese hamster ovary cells
Result: negative
Ames test
Escherichia coli/Salmonella typhimurium
Result: negative
In vitro mammalian cell gene mutation test
mouse lymphoma cells
Result: negative
Carcinogenicity
IARC: No component of this product present at levels greater than or equal to 0.1% is
identified as probable, possible or confirmed human carcinogen by IARC.
ACGIH: No component of this product present at levels greater than or equal to 0.1% is
identified as a carcinogen or potential carcinogen by ACGIH.
NTP: No component of this product present at levels greater than or equal to 0.1% is
identified as a known or anticipated carcinogen by NTP.
OSHA: No component of this product present at levels greater than or equal to 0.1% is
on OSHA’s list of regulated carcinogens.
Reproductive toxicity
No data available
Specific target organ toxicity - single exposure
No data available
Specific target organ toxicity - repeated exposure
No data available
Aspiration hazard
No data available
Additional Information
Repeated dose toxicity - Rat - male and female - Oral - Lowest observed adverse effect
level - 108 mg/kg
(ECHA)
RTECS: XN6465000


SECTION 12. ECOLOGICAL INFORMATION

Toxicity
Toxicity to fish static test LC50 - Lepomis macrochirus (Bluegill) - 510 mg/l - 96 h
Remarks: (ECHA)
Toxicity to daphnia
and other aquatic
invertebrates
static test EC50 - Daphnia magna (Water flea) - 230 mg/l - 48 h
Remarks: (ECHA)
Toxicity to algae static test ErC50 - Pseudokirchneriella subcapitata - > 100 mg/l - 72h
(OECD Test Guideline 201)
Toxicity to bacteria static test EC50 - activated sludge - > 1,000 mg/l - 3 h
(OECD Test Guideline 209)
Persistence and degradability
The methods for determining biodegradability are not applicable to inorganic substances.
Bioaccumulative potential
No data available
Mobility in soil
No data available
Results of PBT and vPvB assessment
PBT/vPvB assessment not available as chemical safety assessment not required/not
conducted


SECTION 13. DISPOSAL CONSIDERATIONS

Waste treatment methods
Product
Offer surplus and non-recyclable solutions to a licensed disposal company.
Contaminated packaging
Dispose of as unused product.


SECTION 14. TRANSPORT INFORMATION

DOT (US)
Not dangerous goods
IMDG
Not dangerous goods
IATA
Not dangerous goods


SECTION 15. REGULATORY INFORMATION

SARA 302 Components
No chemicals in this material are subject to the reporting requirements of SARA Title III,
Section 302.
SARA 313 Components
The following components are subject to reporting levels established by SARA Title III,
Section 313:
Ammonium thiosulphate
CAS-No.
7783-18-8
SARA 311/312 Hazards
No SARA Hazards
Massachusetts Right To Know Components
Ammonium thiosulphate
CAS-No.
7783-18-8
Pennsylvania Right To Know Components
Ammonium thiosulphate CAS-No.
7783-18-8
New Jersey Right To Know Components
Ammonium thiosulphate CAS-No.
7783-18-8
California Prop. 65 Components
This product does not contain any chemicals known to State of California to cause cancer,
birth defects, or any other reproductive harm.


SECTION 16. OTHER INFORMATION

Safety Data Sheet according to Regulation (EC) No. 1907/2006 (REACH). The above information is believed to be correct but does not purport to be all inclusive and shall be used only as a guide. The information in this document is based on the present state of our knowledge and is applicable to the product with regard to appropriate safety precautions. It does not represent any guarantee of the properties of the product. American Elements shall not be held liable for any damage resulting from handling or from contact with the above product. See reverse side of invoice or packing slip for additional terms and conditions of sale. COPYRIGHT 1997-2021 AMERICAN ELEMENTS. LICENSED GRANTED TO MAKE UNLIMITED PAPER COPIES FOR INTERNAL USE ONLY.

About Ammonium Thiosulfate

Ammonium Sulfate Formula Diagram (NH4)2SO4Ammonium Thiosulfate is a colorless crystalline solid that is highly soluble in water and has applications in agriculture and as a photographic fixing agent. is generally immediately available in most volumes. High purity, submicron and nanopowder forms may be considered. American Elements produces to many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia) and follows applicable ASTM testing standards. Typical and custom packaging is available. Additional technical, research and safety (MSDS) information is available as is a Reference Calculator for converting relevant units of measurement.

Ammonium Thiosulfate Synonyms

Ammonium thiosulfate solution; Thiosulfuric acid (H2S2O3), monoammonium salt; Diammonium sulfurothioate; Ammonium hydrogen thiosulphate

Chemical Identifiers

Linear Formula (NH4)2S2O3
MDL Number MFCD00015965
EC No. 231-982-0
Beilstein/Reaxys No. N/A
Pubchem CID 6857883
IUPAC Name azane; sulfurothioic O-acid
SMILES [O-]S([O-])(=O)=S.[NH4+].[NH4+]
InchI Identifier InChI=1S/2H3N.H2O3S2/c;;1-5(2,3)4/h2*1H3;(H2,1,2,3,4)
InchI Key XYXNTHIYBIDHGM-UHFFFAOYSA-N

Packaging Specifications

Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Shipping documentation includes a Certificate of Analysis and Safety Data Sheet (SDS). Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes, and 36,000 lb. tanker trucks.

Related Elements

Nitrogen

See more Nitrogen products. Nitrogen is a Block P, Group 15, Period 2 element. Its electron configuration is [He]2s22p3. Nitrogen is an odorless, tasteless, colorless and mostly inert gas. It is the seventh most abundant element in the universe and it constitutes 78.09% (by volume) of Earth's atmosphere. Nitrogen was discovered by Daniel Rutherford in 1772.

Sulfur

See more Sulfur products. Sulfur (or Sulphur) (atomic symbol: S, atomic number: 16) is a Block P, Group 16, Period 3 element with an atomic radius of 32.066. Sulfur Bohr ModelThe number of electrons in each of Sulfur's shells is 2, 8, 6 and its electron configuration is [Ne] 3s2 3p4. In its elemental form, sulfur has a light yellow appearance. The sulfur atom has a covalent radius of 105 pm and a Van der Waals radius of 180 pm. In nature, sulfur can be found in hot springs, meteorites, volcanoes, and as galena, gypsum, and epsom salts. Sulfur has been known since ancient times but was not accepted as an element until 1777, when Antoine Lavoisier helped to convince the scientific community that it was an element and not a compound.

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